Scanner

A scanner is an input device that converts physical objects (such as documents, images, and photos) into a digital format. Scanners allow the digitalization of text and visual data and their storage or processing on a computer.

• Used for: Digitizing documents, scanning images or photographs, text recognition (using OCR technology).

• Commonly used: In offices, libraries, medical settings, and personal use to store documents in digital form.

📜 Origin:

• The first scanners were invented in the 1950s, but they were expensive and slow in operation.

• In the 1990s, scanners became more accessible and faster, with technologies such as photometric scanning and optical scanners becoming widespread.

• Modern LCD, LED, and CCD technologies have enabled the production of high-quality scanners.

🧠 Development:

• In the 1980s, laser scanners were developed, offering higher speed and quality in scanning.

• In the 1990s, flatbed scanners became common, offering more precise and faster document scanning.

• Today, multifunction printers (printer + scanner) are widely used and have become standard in both home and office use.

🖥️ Types of Scanners:

🧩 By Technology:

1. Flatbed Scanner

   • The most common type of scanner. A document or image is placed on a glass panel, and scanning is performed using an optical device.

   • Typically used for scanning photos, documents, and images with high quality.

2. Handheld Scanner

   • A small, portable scanner that is moved over objects to scan them.

   • Usually used for scanning barcodes and QR codes.

3. Aerial Scanner

   • Used for scanning special objects, such as maps or other three-dimensional objects.

   • Applied in scientific or specialized fields.

4. Barcode Scanner

   • Used in retail and logistics.

   • Quickly scans barcodes or QR codes for easy data entry.

5. Portable Scanner

   • A compact scanner designed for on-the-go use.

   • Can be connected to mobile devices and computers for quick document digitization.

6. 3D Scanner

   • Used for scanning three-dimensional objects.

   • Primarily used to create models for 3D printing.

🧩 By Function:

1. OCR (Optical Character Recognition)

   • A technology that allows the scanner to recognize text in images and convert it into an editable text format. It is particularly useful for digitizing documents.

2. Duplex Scanning

   • The ability to scan both sides of a document at the same time. This feature enhances speed and convenience when scanning double-sided documents.

💡 Fun Fact:

• The first OCR scanner was developed in the 1950s, but the technology became widely used only in the 1990s.

• Modern 3D scanners are used in various industries, including manufacturing, medicine, and design, to create precise digital copies of real-world objects.